.topnav{
    background: #333;
    height: 40px;
    line-height: 40px;
    color: #b0b0b0;
    font-size: 12px;
}
.topnav .topnav-meau a{
    padding: 0 4px;
    border-right: 1px solid #424242;
}
.topnav .topnav-meau a:hover{
    color: #fff;
}
.topnav .topnav-meau li:last-child a{
    border-right: none;
}
.topnav .topnav-meau li:first-child a{
    padding-left: 0;
}
.topnav-car{
    width: 120px;
    height: 40px;
    background: #424242;
    margin-left: 10px;
    position: relative;
    z-index: 45;
}
.topnav-car .topnav-shop{
    width: 120px;
    height: 40px;
    display: block;
    text-align: center;
}
.topnav-shop .iconfont{
    margin-left: 20px;
    margin-right: 5px;
}
.topnav-car:hover .topnav-shop{
    background: #fff;
    color: #ff6700
}
.topnav-detail{
    width: 320px;
    height: 100px;
    border: 1px solid #ccc;
    border-top: none;
    text-align: center;
    line-height: 100px;
    position: absolute;
    top: 40px;
    right: 0;
    background: #fff;
    display: none;
}

.topnav-car:hover .topnav-detail{
    display: block;
}